A 31-year-old man has been arrested on suspicion of murder after three people were killed in Nottingham city centre early on Tuesday morning, Nottinghamshire Police said.

Police have put in place multiple road closures in Nottingham as officers deal with the ongoing serious incident.

The Nottingham Express Transit (NET) tram network said it has suspended all services due to "major police incidents around the city and suburbs".

In a statement issued on Tuesday morning, Nottinghamshire Police said officers and other emergency services are currently in attendance at several locations, including the Maid Marian Way junction of Upper Parliament Street.

The statement read: "There are multiple road closures in place throughout the city while the incident is being investigated.

"We are asking the public and motorists to please avoid the following areas and plan alternate routes."

Roads cordoned off include Ilkeston Road, Milton Street, Maples Street, and Woodborough Road, from the junction with Magdala Road into the city.

Chief Inspector Neil Humphries said: "Officers are currently on scene at multiple road closures due to an ongoing incident.

"Please avoid these areas as they are expected to remain closed for some time."

In a separate statement, NET advised travellers that NCT buses are accepting its tickets and passes, while EMR trains are also accepting its tickets and passes between Hucknall and Beeston, and Nottingham station.

Local resident Glen Gretton said he was woken up at around 5am on Tuesday morning by the sounds of a series of police cars passing his home.

The 46-year-old delivery driver, who lives in a flat in Mansfield Road in Sherwood, told the PA news agency: "I heard a police car go past. It was driving extremely quickly, followed by another one, another one.

"They just kept coming so I knew something quite major ... was happening somewhere around the city centre."